The MSD Flying Magnet Crank Trigger uses four magnets secured in the aluminum trigger wheel that pass by a stationary non-magnetic pick-up to trigger the ignition. This "flying magnet" design produces accurate trigger signals and the non-magnetic pick-up cannot be falsely triggered. Each Flying Magnet Crank Trigger includes a two-piece mounting bracket for the non-magnetic pick-up that in most cases will work on either the passenger side or driver's side of the engine. The CNC-machined aluminum bracket securely holds the pick-up in place and is slotted to provide a wide range of timing adjustments. Spacers are included so you can mount the bracket on engines with standard motor mounts or engines with a .25" motor plate. These systems will trigger MSD 6, 7, and 8 Series Ignitions and all MSD Timing Accessories. For a long time, racers have known that one of the best things to do to an engine to improve performance is to stabilize the ignition timing. The MSD Flying Magnet Crank Trigger system does exactly that by using four magnets embedded in an aluminum wheel. Although similar in appearance to other crank triggers, the MSD Flying Magnet design works on a different principle. Most crank triggers have a wheel, with steel studs sticking out, bolted to the harmonic balancer. As the crankshaft turns, the studs pass by a stationary magnetic pick-up, triggering the ignition. This pick-up can be triggered by other bolts, debris, or even vibrations which will cause a loss of power or engine damage.

Manufacturer-listed applications

Match the engine, body, trim and installation requirements. All qualifications shown for an application apply together. Where this part requires a modified or aftermarket assembly, the vehicle listing alone does not confirm compatibility with factory equipment.

Vehicle	Configuration and qualifications
1975 Chevrolet Bel Air 1976 Chevrolet K5 Blazer 1975–1976 Chevrolet Impala 1979–1980 GMC C1500 Suburban 1979–1985 GMC C2500 Suburban 1986 GMC C3500 1975–1978 GMC C15 Suburban 1975–1978 GMC C25 Suburban 1976 GMC Jimmy 1976–1977 GMC K25 Suburban	Engine: 7.4L V8 Quantity: 1 Submodel: Base Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1976–1978 Chevrolet K5 Blazer	Engine: 7.4L V8 Quantity: 1 Submodel: Cheyenne Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1977–1978 Chevrolet K5 Blazer 1975–1980 Chevrolet C10 Suburban 1975–1980 Chevrolet C20 Suburban	Engine: 7.4L V8 Quantity: 1 Submodel: Custom Deluxe Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1978 Chevrolet K5 Blazer 1975–1980 Chevrolet C10 Suburban 1975–1977, 1979–1980, 1982–1986 Chevrolet C20 Suburban 1985 Chevrolet K20 Suburban	Engine: 7.4L V8 Quantity: 1 Submodel: Silverado Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1975–1980 Chevrolet C10 1975–1980 Chevrolet C20 1975–1980 Chevrolet C30 1976, 1980 Chevrolet K10 1976–1978 Chevrolet K20 1977, 1980 Chevrolet K30 1987–1988 Chevrolet R30 1987–1988 Chevrolet V30	Engine: 7.4L V8 Quantity: 1 Submodel: Custom Deluxe Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1975–1980 Chevrolet C10 1975–1986 Chevrolet C20 1975–1986 Chevrolet C30 1976, 1980 Chevrolet K10 1976–1978 Chevrolet K20 1977, 1980–1986 Chevrolet K30 1987–1988 Chevrolet R30 1989 Chevrolet R3500 1987–1988 Chevrolet V30 1989 Chevrolet V3500	Engine: 7.4L V8 Quantity: 1 Submodel: Silverado Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1975–1980 Chevrolet C10 1975–1981 Chevrolet C20 1975–1981 Chevrolet C30 1976, 1980 Chevrolet K10 1976–1978 Chevrolet K20 1977, 1980–1981 Chevrolet K30 1988 Chevrolet R30 1989 Chevrolet R3500 1988 Chevrolet V30 1989 Chevrolet V3500	Engine: 7.4L V8 Quantity: 1 Submodel: Cheyenne Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1975–1980 Chevrolet C10 1975–1986 Chevrolet C20 1975–1986 Chevrolet C30 1976, 1980 Chevrolet K10 1976–1978 Chevrolet K20 1977, 1980–1986 Chevrolet K30 1987–1988 Chevrolet R30 1989 Chevrolet R3500 1987–1988 Chevrolet V30 1989 Chevrolet V3500	Engine: 7.4L V8 Quantity: 1 Submodel: Scottsdale Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1978–1980 Chevrolet C10	Engine: 7.4L V8 Quantity: 1 Submodel: Big Ten Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1975–1980 Chevrolet C10 Suburban 1975–1980, 1982, 1984–1986 Chevrolet C20 Suburban 1985 Chevrolet K20 Suburban	Engine: 7.4L V8 Quantity: 1 Submodel: Scottsdale Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1981–1986 Chevrolet C20 1981–1986 Chevrolet C30 1981–1986 Chevrolet K30	Engine: 7.4L V8 Quantity: 1 Submodel: Custom Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1981 Chevrolet C20 1981 Chevrolet C30 1981 Chevrolet K30	Engine: 7.4L V8 Quantity: 1 Submodel: Deluxe Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1981–1986 Chevrolet C20 Suburban 1975–1976 Chevrolet Impala 1985 Chevrolet K20 Suburban	Engine: 7.4L V8 Quantity: 1 Submodel: Custom Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1981 Chevrolet C20 Suburban	Engine: 7.4L V8 Quantity: 1 Submodel: Deluxe Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1975–1976 Chevrolet Caprice	Engine: 7.4L V8 Quantity: 1 Submodel: Classic Sport Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1975–1976 Chevrolet Caprice 1975 GMC Sprint	Engine: 7.4L V8 Quantity: 1 Submodel: Classic Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1975 Chevrolet Caprice	Engine: 7.4L V8 Quantity: 1 Submodel: Estate Wagon Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1976 Chevrolet Caprice	Engine: 7.4L V8 Quantity: 1 Submodel: Classic Landau Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1976 Chevrolet Caprice	Engine: 7.4L V8 Quantity: 1 Submodel: Classic Estate Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1976 Chevrolet G20 1975–1976 Chevrolet G30	Engine: 7.4L V8 Quantity: 1 Submodel: Beauville Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1976 Chevrolet G20 1975–1976 Chevrolet G30	Engine: 7.4L V8 Quantity: 1 Submodel: Chevy Van Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1975–1976 Chevrolet G30	Engine: 7.4L V8 Quantity: 1 Submodel: Hi-Cube Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1975–1976 Chevrolet Impala	Engine: 7.4L V8 Quantity: 1 Submodel: Sport Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1976 Chevrolet Impala	Engine: 7.4L V8 Quantity: 1 Submodel: Custom Landau Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1976 Chevrolet Impala 1975 Chevrolet Monte Carlo	Engine: 7.4L V8 Quantity: 1 Submodel: S Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1979 Chevrolet K10 1980 Chevrolet K20	Engine: 6.6L V8 Quantity: 1 Submodel: Silverado Engine displacement (cu in): 400 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1979 Chevrolet K10 1980 Chevrolet K20	Engine: 6.6L V8 Quantity: 1 Submodel: Cheyenne Engine displacement (cu in): 400 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1979 Chevrolet K10 1980 Chevrolet K20	Engine: 6.6L V8 Quantity: 1 Submodel: Scottsdale Engine displacement (cu in): 400 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1979 Chevrolet K10 1980 Chevrolet K20	Engine: 6.6L V8 Quantity: 1 Submodel: Custom Deluxe Engine displacement (cu in): 400 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1979–1980 GMC C1500 1979–1982 GMC C2500 1979–1982 GMC C3500 1980 GMC K1500 1979–1982 GMC K3500 1975–1978 GMC C15 1975–1978 GMC C25 1975–1978 GMC C35 1976 GMC K15 1976–1978 GMC K25	Engine: 7.4L V8 Quantity: 1 Submodel: Sierra Grande Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1979–1980 GMC C1500 1978 GMC C15	Engine: 7.4L V8 Quantity: 1 Submodel: Street Coupe Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1979–1980 GMC C1500 1979–1986 GMC C2500 1986 GMC C2500 Suburban 1979–1985 GMC C3500 1980 GMC K1500 1979–1986 GMC K3500 1987–1989 GMC R3500 1987–1989 GMC V3500 1975–1978 GMC C15 1975–1978 GMC C25 1975–1978 GMC C35 1976 GMC K15 1976–1978 GMC K25	Engine: 7.4L V8 Quantity: 1 Submodel: High Sierra Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1979–1980 GMC C1500 1979–1986 GMC C2500 1986 GMC C2500 Suburban 1979–1985 GMC C3500 1980 GMC K1500 1979–1986 GMC K3500 1987–1989 GMC R3500 1987–1989 GMC V3500 1975–1978 GMC C15 1975–1978 GMC C25 1975–1978 GMC C35 1976 GMC K15 1976–1978 GMC K25	Engine: 7.4L V8 Quantity: 1 Submodel: Base Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1979–1980 GMC C1500 1979–1986 GMC C2500 1986 GMC C2500 Suburban 1979–1985 GMC C3500 1980 GMC K1500 1979–1986 GMC K3500 1987–1989 GMC R3500 1987–1989 GMC V3500 1975–1978 GMC C15 1975–1978 GMC C25 1975–1978 GMC C35 1976 GMC K15 1976–1978 GMC K25	Engine: 7.4L V8 Quantity: 1 Submodel: Sierra Classic Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1979–1980 GMC C1500 1977–1978 GMC C15	Engine: 7.4L V8 Quantity: 1 Submodel: Heavy Half Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1979–1980 GMC C1500 Suburban 1979–1985 GMC C2500 Suburban 1986 GMC C3500 1975–1978 GMC C15 Suburban 1975–1978 GMC C25 Suburban 1976 GMC Jimmy 1976–1977 GMC K25 Suburban	Engine: 7.4L V8 Quantity: 1 Submodel: High Sierra Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1979–1980 GMC C1500 Suburban 1979–1985 GMC C2500 Suburban 1986 GMC C3500 1975–1978 GMC C15 Suburban 1975–1978 GMC C25 Suburban 1976 GMC Jimmy 1976–1977 GMC K25 Suburban	Engine: 7.4L V8 Quantity: 1 Submodel: Sierra Classic Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1979–1980 GMC C1500 Suburban 1979–1982 GMC C2500 Suburban 1975–1978 GMC C15 Suburban 1975–1978 GMC C25 Suburban 1976 GMC Jimmy 1976–1977 GMC K25 Suburban	Engine: 7.4L V8 Quantity: 1 Submodel: Sierra Grande Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1979 GMC K1500	Engine: 5.7L V8 Quantity: 1 Submodel: High Sierra Engine displacement (cu in): 350 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1979 GMC K1500	Engine: 5.7L V8 Quantity: 1 Submodel: Sierra Grande Engine displacement (cu in): 350 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1979 GMC K1500	Engine: 5.7L V8 Quantity: 1 Submodel: Base Engine displacement (cu in): 350 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1979 GMC K1500	Engine: 5.7L V8 Quantity: 1 Submodel: Sierra Classic Engine displacement (cu in): 350 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1977 GMC C15	Engine: 7.4L V8 Quantity: 1 Submodel: Indy Hauler Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1975–1976 GMC G25	Engine: 7.4L V8 Quantity: 1 Submodel: Rally STX Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1975–1976 GMC G25	Engine: 7.4L V8 Quantity: 1 Submodel: Rally Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Crank Trigger Kit; 8 in. Balancer;
1976 GMC G35	Engine: 7.4L V8 Quantity: 1 Submodel: Magnavan Engine displacement (cu in): 454 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1975 GMC Sprint	Engine: 6.6L V8 Quantity: 1 Submodel: High Sierra Engine displacement (cu in): 402 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1975 GMC Sprint	Engine: 6.6L V8 Quantity: 1 Submodel: Base Engine displacement (cu in): 402 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1975 GMC Sprint	Engine: 6.6L V8 Quantity: 1 Submodel: Classic Engine displacement (cu in): 402 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles
1975 GMC Sprint	Engine: 6.6L V8 Quantity: 1 Submodel: SP Engine displacement (cu in): 402 Required parent assembly part: 8620 Parent assembly brand: BCCX Application notes: Not Legal For Sale Or Use On Pollution Controlled Vehicles